/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 06:32:49,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 06:32:49,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 06:32:49,682 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 06:32:49,692 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 06:32:49,694 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 06:32:49,696 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 06:32:49,700 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 06:32:49,701 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 06:32:49,704 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 06:32:49,705 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 06:32:49,706 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 06:32:49,706 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 06:32:49,708 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 06:32:49,711 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 06:32:49,714 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 06:32:49,714 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 06:32:49,714 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 06:32:49,715 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 06:32:49,716 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 06:32:49,717 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 06:32:49,718 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 06:32:49,719 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 06:32:49,720 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 06:32:49,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 06:32:49,726 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 06:32:49,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 06:32:49,726 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 06:32:49,726 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 06:32:49,727 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 06:32:49,727 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 06:32:49,727 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 06:32:49,728 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 06:32:49,728 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 06:32:49,729 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 06:32:49,729 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 06:32:49,729 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 06:32:49,729 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 06:32:49,729 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 06:32:49,730 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 06:32:49,730 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 06:32:49,736 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 06:32:49,754 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 06:32:49,754 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 06:32:49,754 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 06:32:49,755 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 06:32:49,755 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 06:32:49,756 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 06:32:49,756 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 06:32:49,756 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 06:32:49,756 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 06:32:49,756 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 06:32:49,757 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 06:32:49,757 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 06:32:49,757 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 06:32:49,757 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 06:32:49,757 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 06:32:49,757 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 06:32:49,757 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 06:32:49,757 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 06:32:49,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 06:32:49,757 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 06:32:49,757 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 06:32:49,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:32:49,759 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 06:32:49,759 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 06:32:49,759 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 06:32:49,759 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 06:32:49,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 06:32:49,759 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 06:32:49,759 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 06:32:49,759 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 06:32:49,759 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 06:32:49,760 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 06:32:49,761 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 06:32:49,761 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 06:32:49,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 06:32:49,940 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 06:32:49,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 06:32:49,943 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 06:32:49,948 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 06:32:49,950 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2022-01-11 06:32:50,017 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e1ba6f5a/3db0f707318344e0acf8809f525d05fb/FLAGe64acd3ca [2022-01-11 06:32:50,420 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 06:32:50,421 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2022-01-11 06:32:50,432 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e1ba6f5a/3db0f707318344e0acf8809f525d05fb/FLAGe64acd3ca [2022-01-11 06:32:50,443 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e1ba6f5a/3db0f707318344e0acf8809f525d05fb [2022-01-11 06:32:50,445 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 06:32:50,447 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 06:32:50,449 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 06:32:50,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 06:32:50,451 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 06:32:50,452 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:32:50" (1/1) ... [2022-01-11 06:32:50,453 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dd670c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:50, skipping insertion in model container [2022-01-11 06:32:50,453 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:32:50" (1/1) ... [2022-01-11 06:32:50,457 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 06:32:50,505 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 06:32:50,741 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[7251,7264] [2022-01-11 06:32:50,813 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:32:50,831 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 06:32:50,901 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[7251,7264] [2022-01-11 06:32:50,919 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:32:50,931 INFO L208 MainTranslator]: Completed translation [2022-01-11 06:32:50,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:50 WrapperNode [2022-01-11 06:32:50,932 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 06:32:50,933 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 06:32:50,933 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 06:32:50,933 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 06:32:50,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:50" (1/1) ... [2022-01-11 06:32:50,949 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:50" (1/1) ... [2022-01-11 06:32:50,976 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 660 [2022-01-11 06:32:50,977 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 06:32:50,978 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 06:32:50,978 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 06:32:50,978 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 06:32:50,991 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:50" (1/1) ... [2022-01-11 06:32:50,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:50" (1/1) ... [2022-01-11 06:32:51,001 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:50" (1/1) ... [2022-01-11 06:32:51,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:50" (1/1) ... [2022-01-11 06:32:51,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:50" (1/1) ... [2022-01-11 06:32:51,018 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:50" (1/1) ... [2022-01-11 06:32:51,021 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:50" (1/1) ... [2022-01-11 06:32:51,040 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 06:32:51,041 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 06:32:51,041 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 06:32:51,041 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 06:32:51,056 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:50" (1/1) ... [2022-01-11 06:32:51,064 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:32:51,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:32:51,095 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 06:32:51,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 06:32:51,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 06:32:51,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 06:32:51,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 06:32:51,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 06:32:51,232 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 06:32:51,233 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 06:32:51,710 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 06:32:51,720 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 06:32:51,720 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 06:32:51,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:32:51 BoogieIcfgContainer [2022-01-11 06:32:51,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 06:32:51,723 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 06:32:51,723 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 06:32:51,724 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 06:32:51,726 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:32:51" (1/1) ... [2022-01-11 06:32:52,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:32:52 BasicIcfg [2022-01-11 06:32:52,169 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 06:32:52,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 06:32:52,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 06:32:52,173 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 06:32:52,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 06:32:50" (1/4) ... [2022-01-11 06:32:52,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@427d42d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:32:52, skipping insertion in model container [2022-01-11 06:32:52,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:50" (2/4) ... [2022-01-11 06:32:52,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@427d42d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:32:52, skipping insertion in model container [2022-01-11 06:32:52,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:32:51" (3/4) ... [2022-01-11 06:32:52,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@427d42d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 06:32:52, skipping insertion in model container [2022-01-11 06:32:52,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:32:52" (4/4) ... [2022-01-11 06:32:52,177 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.cTransformedIcfg [2022-01-11 06:32:52,183 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 06:32:52,183 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 06:32:52,225 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 06:32:52,230 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 06:32:52,231 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 06:32:52,243 INFO L276 IsEmpty]: Start isEmpty. Operand has 180 states, 178 states have (on average 1.7191011235955056) internal successors, (306), 179 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:52,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-11 06:32:52,251 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:32:52,251 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:32:52,251 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:32:52,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:32:52,255 INFO L85 PathProgramCache]: Analyzing trace with hash 363378366, now seen corresponding path program 1 times [2022-01-11 06:32:52,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:32:52,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512354790] [2022-01-11 06:32:52,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:32:52,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:32:52,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:32:52,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:32:52,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:32:52,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512354790] [2022-01-11 06:32:52,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512354790] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:32:52,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:32:52,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:32:52,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21012804] [2022-01-11 06:32:52,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:32:52,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:32:52,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:32:52,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:32:52,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:32:52,739 INFO L87 Difference]: Start difference. First operand has 180 states, 178 states have (on average 1.7191011235955056) internal successors, (306), 179 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:53,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:32:53,117 INFO L93 Difference]: Finished difference Result 365 states and 600 transitions. [2022-01-11 06:32:53,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:32:53,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-11 06:32:53,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:32:53,137 INFO L225 Difference]: With dead ends: 365 [2022-01-11 06:32:53,137 INFO L226 Difference]: Without dead ends: 275 [2022-01-11 06:32:53,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:32:53,143 INFO L933 BasicCegarLoop]: 304 mSDtfsCounter, 156 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-11 06:32:53,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 568 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-11 06:32:53,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2022-01-11 06:32:53,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 273. [2022-01-11 06:32:53,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 1.5036764705882353) internal successors, (409), 272 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:53,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 409 transitions. [2022-01-11 06:32:53,221 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 409 transitions. Word has length 65 [2022-01-11 06:32:53,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:32:53,221 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 409 transitions. [2022-01-11 06:32:53,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:53,222 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 409 transitions. [2022-01-11 06:32:53,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 06:32:53,225 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:32:53,225 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:32:53,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 06:32:53,226 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:32:53,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:32:53,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1621157669, now seen corresponding path program 1 times [2022-01-11 06:32:53,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:32:53,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858359671] [2022-01-11 06:32:53,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:32:53,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:32:53,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:32:53,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:32:53,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:32:53,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858359671] [2022-01-11 06:32:53,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858359671] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:32:53,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:32:53,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:32:53,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407924028] [2022-01-11 06:32:53,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:32:53,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:32:53,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:32:53,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:32:53,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:32:53,490 INFO L87 Difference]: Start difference. First operand 273 states and 409 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:53,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:32:53,571 INFO L93 Difference]: Finished difference Result 417 states and 633 transitions. [2022-01-11 06:32:53,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:32:53,571 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-11 06:32:53,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:32:53,574 INFO L225 Difference]: With dead ends: 417 [2022-01-11 06:32:53,574 INFO L226 Difference]: Without dead ends: 415 [2022-01-11 06:32:53,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:32:53,578 INFO L933 BasicCegarLoop]: 261 mSDtfsCounter, 362 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:32:53,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 647 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:32:53,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2022-01-11 06:32:53,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 275. [2022-01-11 06:32:53,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 1.5) internal successors, (411), 274 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:53,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 411 transitions. [2022-01-11 06:32:53,613 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 411 transitions. Word has length 66 [2022-01-11 06:32:53,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:32:53,615 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 411 transitions. [2022-01-11 06:32:53,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:53,616 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 411 transitions. [2022-01-11 06:32:53,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-11 06:32:53,619 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:32:53,620 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:32:53,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 06:32:53,622 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:32:53,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:32:53,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1284700892, now seen corresponding path program 1 times [2022-01-11 06:32:53,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:32:53,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266804128] [2022-01-11 06:32:53,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:32:53,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:32:53,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:32:53,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:32:53,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:32:53,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266804128] [2022-01-11 06:32:53,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266804128] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:32:53,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:32:53,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 06:32:53,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147345317] [2022-01-11 06:32:53,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:32:53,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 06:32:53,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:32:53,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 06:32:53,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 06:32:53,917 INFO L87 Difference]: Start difference. First operand 275 states and 411 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:54,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:32:54,461 INFO L93 Difference]: Finished difference Result 1530 states and 2367 transitions. [2022-01-11 06:32:54,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 06:32:54,462 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-11 06:32:54,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:32:54,466 INFO L225 Difference]: With dead ends: 1530 [2022-01-11 06:32:54,466 INFO L226 Difference]: Without dead ends: 1318 [2022-01-11 06:32:54,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-11 06:32:54,469 INFO L933 BasicCegarLoop]: 638 mSDtfsCounter, 1120 mSDsluCounter, 1431 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 2069 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-11 06:32:54,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1120 Valid, 2069 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-11 06:32:54,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2022-01-11 06:32:54,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 852. [2022-01-11 06:32:54,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 851 states have (on average 1.5311398354876615) internal successors, (1303), 851 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:54,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1303 transitions. [2022-01-11 06:32:54,625 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1303 transitions. Word has length 67 [2022-01-11 06:32:54,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:32:54,626 INFO L470 AbstractCegarLoop]: Abstraction has 852 states and 1303 transitions. [2022-01-11 06:32:54,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:54,626 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1303 transitions. [2022-01-11 06:32:54,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-11 06:32:54,627 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:32:54,627 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:32:54,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 06:32:54,627 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:32:54,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:32:54,628 INFO L85 PathProgramCache]: Analyzing trace with hash -597360800, now seen corresponding path program 1 times [2022-01-11 06:32:54,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:32:54,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825606838] [2022-01-11 06:32:54,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:32:54,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:32:54,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:32:54,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:32:54,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:32:54,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825606838] [2022-01-11 06:32:54,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825606838] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:32:54,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:32:54,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:32:54,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555924153] [2022-01-11 06:32:54,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:32:54,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:32:54,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:32:54,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:32:54,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:32:54,865 INFO L87 Difference]: Start difference. First operand 852 states and 1303 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:56,883 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:32:59,050 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:32:59,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:32:59,317 INFO L93 Difference]: Finished difference Result 1916 states and 2965 transitions. [2022-01-11 06:32:59,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:32:59,319 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-11 06:32:59,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:32:59,323 INFO L225 Difference]: With dead ends: 1916 [2022-01-11 06:32:59,323 INFO L226 Difference]: Without dead ends: 1358 [2022-01-11 06:32:59,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:32:59,325 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 226 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-01-11 06:32:59,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 717 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2022-01-11 06:32:59,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1358 states. [2022-01-11 06:32:59,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1358 to 1356. [2022-01-11 06:32:59,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1356 states, 1355 states have (on average 1.537269372693727) internal successors, (2083), 1355 states have internal predecessors, (2083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:59,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 2083 transitions. [2022-01-11 06:32:59,522 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 2083 transitions. Word has length 68 [2022-01-11 06:32:59,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:32:59,522 INFO L470 AbstractCegarLoop]: Abstraction has 1356 states and 2083 transitions. [2022-01-11 06:32:59,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:59,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 2083 transitions. [2022-01-11 06:32:59,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-11 06:32:59,523 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:32:59,523 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:32:59,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 06:32:59,524 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:32:59,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:32:59,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1740142315, now seen corresponding path program 1 times [2022-01-11 06:32:59,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:32:59,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692637370] [2022-01-11 06:32:59,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:32:59,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:32:59,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:32:59,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:32:59,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:32:59,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692637370] [2022-01-11 06:32:59,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692637370] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:32:59,772 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:32:59,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 06:32:59,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367350651] [2022-01-11 06:32:59,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:32:59,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 06:32:59,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:32:59,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 06:32:59,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-11 06:32:59,773 INFO L87 Difference]: Start difference. First operand 1356 states and 2083 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:33:02,200 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:33:04,952 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:33:07,101 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:33:09,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:33:09,374 INFO L93 Difference]: Finished difference Result 6284 states and 9702 transitions. [2022-01-11 06:33:09,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 06:33:09,375 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-11 06:33:09,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:33:09,390 INFO L225 Difference]: With dead ends: 6284 [2022-01-11 06:33:09,391 INFO L226 Difference]: Without dead ends: 5016 [2022-01-11 06:33:09,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-11 06:33:09,394 INFO L933 BasicCegarLoop]: 396 mSDtfsCounter, 1209 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 20 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1209 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-01-11 06:33:09,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1209 Valid, 1220 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 704 Invalid, 3 Unknown, 0 Unchecked, 8.3s Time] [2022-01-11 06:33:09,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5016 states. [2022-01-11 06:33:10,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5016 to 3878. [2022-01-11 06:33:10,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3878 states, 3877 states have (on average 1.5323703894763994) internal successors, (5941), 3877 states have internal predecessors, (5941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:33:10,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 5941 transitions. [2022-01-11 06:33:10,217 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 5941 transitions. Word has length 69 [2022-01-11 06:33:10,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:33:10,217 INFO L470 AbstractCegarLoop]: Abstraction has 3878 states and 5941 transitions. [2022-01-11 06:33:10,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:33:10,218 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 5941 transitions. [2022-01-11 06:33:10,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-11 06:33:10,219 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:33:10,219 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:33:10,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 06:33:10,219 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:33:10,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:33:10,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1918638426, now seen corresponding path program 1 times [2022-01-11 06:33:10,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:33:10,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732353471] [2022-01-11 06:33:10,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:33:10,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:33:10,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:33:10,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:33:10,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:33:10,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732353471] [2022-01-11 06:33:10,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732353471] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:33:10,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:33:10,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:33:10,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115866871] [2022-01-11 06:33:10,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:33:10,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:33:10,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:33:10,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:33:10,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:33:10,290 INFO L87 Difference]: Start difference. First operand 3878 states and 5941 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:33:11,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:33:11,583 INFO L93 Difference]: Finished difference Result 9710 states and 14868 transitions. [2022-01-11 06:33:11,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:33:11,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-11 06:33:11,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:33:11,599 INFO L225 Difference]: With dead ends: 9710 [2022-01-11 06:33:11,600 INFO L226 Difference]: Without dead ends: 6144 [2022-01-11 06:33:11,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:33:11,604 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 171 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:33:11,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 478 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:33:11,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6144 states. [2022-01-11 06:33:12,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6144 to 6113. [2022-01-11 06:33:12,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6113 states, 6112 states have (on average 1.5075261780104712) internal successors, (9214), 6112 states have internal predecessors, (9214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:33:12,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6113 states to 6113 states and 9214 transitions. [2022-01-11 06:33:12,923 INFO L78 Accepts]: Start accepts. Automaton has 6113 states and 9214 transitions. Word has length 69 [2022-01-11 06:33:12,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:33:12,924 INFO L470 AbstractCegarLoop]: Abstraction has 6113 states and 9214 transitions. [2022-01-11 06:33:12,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:33:12,924 INFO L276 IsEmpty]: Start isEmpty. Operand 6113 states and 9214 transitions. [2022-01-11 06:33:12,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-11 06:33:12,926 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:33:12,926 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:33:12,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 06:33:12,926 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:33:12,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:33:12,927 INFO L85 PathProgramCache]: Analyzing trace with hash 2130835253, now seen corresponding path program 1 times [2022-01-11 06:33:12,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:33:12,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216397525] [2022-01-11 06:33:12,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:33:12,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:33:12,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:33:13,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:33:13,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:33:13,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216397525] [2022-01-11 06:33:13,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216397525] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:33:13,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:33:13,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:33:13,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701218660] [2022-01-11 06:33:13,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:33:13,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:33:13,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:33:13,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:33:13,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:33:13,029 INFO L87 Difference]: Start difference. First operand 6113 states and 9214 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:33:15,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:33:15,473 INFO L93 Difference]: Finished difference Result 16543 states and 24868 transitions. [2022-01-11 06:33:15,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:33:15,473 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-11 06:33:15,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:33:15,502 INFO L225 Difference]: With dead ends: 16543 [2022-01-11 06:33:15,502 INFO L226 Difference]: Without dead ends: 11007 [2022-01-11 06:33:15,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:33:15,510 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 158 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:33:15,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 474 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:33:15,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11007 states. [2022-01-11 06:33:17,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11007 to 10973. [2022-01-11 06:33:17,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10973 states, 10972 states have (on average 1.4785818446955887) internal successors, (16223), 10972 states have internal predecessors, (16223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:33:17,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10973 states to 10973 states and 16223 transitions. [2022-01-11 06:33:17,952 INFO L78 Accepts]: Start accepts. Automaton has 10973 states and 16223 transitions. Word has length 69 [2022-01-11 06:33:17,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:33:17,953 INFO L470 AbstractCegarLoop]: Abstraction has 10973 states and 16223 transitions. [2022-01-11 06:33:17,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:33:17,953 INFO L276 IsEmpty]: Start isEmpty. Operand 10973 states and 16223 transitions. [2022-01-11 06:33:17,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-11 06:33:17,963 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:33:17,963 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:33:17,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 06:33:17,963 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:33:17,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:33:17,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1310776327, now seen corresponding path program 1 times [2022-01-11 06:33:17,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:33:17,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015947526] [2022-01-11 06:33:17,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:33:17,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:33:18,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:33:18,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:33:18,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:33:18,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015947526] [2022-01-11 06:33:18,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015947526] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:33:18,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:33:18,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:33:18,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466376689] [2022-01-11 06:33:18,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:33:18,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:33:18,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:33:18,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:33:18,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:33:18,055 INFO L87 Difference]: Start difference. First operand 10973 states and 16223 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:33:20,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:33:20,715 INFO L93 Difference]: Finished difference Result 14869 states and 21896 transitions. [2022-01-11 06:33:20,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:33:20,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-11 06:33:20,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:33:20,759 INFO L225 Difference]: With dead ends: 14869 [2022-01-11 06:33:20,759 INFO L226 Difference]: Without dead ends: 11633 [2022-01-11 06:33:20,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:33:20,764 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 145 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:33:20,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 474 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:33:20,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11633 states. [2022-01-11 06:33:23,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11633 to 11631. [2022-01-11 06:33:23,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11631 states, 11630 states have (on average 1.4456577815993121) internal successors, (16813), 11630 states have internal predecessors, (16813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:33:23,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11631 states to 11631 states and 16813 transitions. [2022-01-11 06:33:23,178 INFO L78 Accepts]: Start accepts. Automaton has 11631 states and 16813 transitions. Word has length 69 [2022-01-11 06:33:23,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:33:23,178 INFO L470 AbstractCegarLoop]: Abstraction has 11631 states and 16813 transitions. [2022-01-11 06:33:23,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:33:23,179 INFO L276 IsEmpty]: Start isEmpty. Operand 11631 states and 16813 transitions. [2022-01-11 06:33:23,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-11 06:33:23,182 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:33:23,182 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:33:23,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 06:33:23,183 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:33:23,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:33:23,183 INFO L85 PathProgramCache]: Analyzing trace with hash 16147478, now seen corresponding path program 1 times [2022-01-11 06:33:23,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:33:23,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605614984] [2022-01-11 06:33:23,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:33:23,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:33:23,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:33:23,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:33:23,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:33:23,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605614984] [2022-01-11 06:33:23,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605614984] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:33:23,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:33:23,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:33:23,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617888331] [2022-01-11 06:33:23,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:33:23,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:33:23,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:33:23,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:33:23,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:33:23,246 INFO L87 Difference]: Start difference. First operand 11631 states and 16813 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:33:25,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:33:25,753 INFO L93 Difference]: Finished difference Result 20847 states and 30233 transitions. [2022-01-11 06:33:25,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:33:25,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-11 06:33:25,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:33:25,770 INFO L225 Difference]: With dead ends: 20847 [2022-01-11 06:33:25,770 INFO L226 Difference]: Without dead ends: 12406 [2022-01-11 06:33:25,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:33:25,779 INFO L933 BasicCegarLoop]: 348 mSDtfsCounter, 175 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:33:25,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 579 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:33:25,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12406 states. [2022-01-11 06:33:28,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12406 to 11419. [2022-01-11 06:33:28,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11419 states, 11418 states have (on average 1.438255386232265) internal successors, (16422), 11418 states have internal predecessors, (16422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:33:28,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11419 states to 11419 states and 16422 transitions. [2022-01-11 06:33:28,056 INFO L78 Accepts]: Start accepts. Automaton has 11419 states and 16422 transitions. Word has length 69 [2022-01-11 06:33:28,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:33:28,056 INFO L470 AbstractCegarLoop]: Abstraction has 11419 states and 16422 transitions. [2022-01-11 06:33:28,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:33:28,056 INFO L276 IsEmpty]: Start isEmpty. Operand 11419 states and 16422 transitions. [2022-01-11 06:33:28,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-11 06:33:28,060 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:33:28,060 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:33:28,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 06:33:28,061 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:33:28,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:33:28,061 INFO L85 PathProgramCache]: Analyzing trace with hash -620039077, now seen corresponding path program 1 times [2022-01-11 06:33:28,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:33:28,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332238106] [2022-01-11 06:33:28,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:33:28,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:33:28,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:33:28,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:33:28,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:33:28,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332238106] [2022-01-11 06:33:28,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332238106] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:33:28,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:33:28,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 06:33:28,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904625336] [2022-01-11 06:33:28,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:33:28,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 06:33:28,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:33:28,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 06:33:28,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-11 06:33:28,303 INFO L87 Difference]: Start difference. First operand 11419 states and 16422 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:33:30,530 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:33:32,675 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:33:36,823 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:33:38,962 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:33:41,532 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []